23896123397 has 4 divisors (see below), whose sum is σ = 23900660460. Its totient is φ = 23891586336.

The previous prime is 23896123393. The next prime is 23896123403. The reversal of 23896123397 is 79332169832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18205835041 + 5690288356 = 134929^2 + 75434^2 .

It is a cyclic number.

It is not a de Polignac number, because 23896123397 - 2² = 23896123393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23896123393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2260622 + ... + 2271167.

It is an arithmetic number, because the mean of its divisors is an integer number (5975165115).

Almost surely, 2^23896123397 is an apocalyptic number.

It is an amenable number.

23896123397 is a deficient number, since it is larger than the sum of its proper divisors (4537063).

23896123397 is an equidigital number, since it uses as much as digits as its factorization.

23896123397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537062.

The product of its digits is 2939328, while the sum is 53.

The spelling of 23896123397 in words is "twenty-three billion, eight hundred ninety-six million, one hundred twenty-three thousand, three hundred ninety-seven".